docs: def cooccurrences(self, domains):
          """Get the domains related to input domains.
  
          Args:
              domains: an enumerable of strings domain names
          Returns:
              An enumerable of string domain names
          """
          api_name = 'opendns-cooccurrences'
          fmt_url_path = u'recommendations/name/{0}.json'
          return self._multi_get(api_name, fmt_url_path, domains)